Contiki 2.6

ext-sensor.c

00001 /*
00002  * Copyright (c) 2006, Swedish Institute of Computer Science.
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  * 1. Redistributions of source code must retain the above copyright
00009  *    notice, this list of conditions and the following disclaimer.
00010  * 2. Redistributions in binary form must reproduce the above copyright
00011  *    notice, this list of conditions and the following disclaimer in the
00012  *    documentation and/or other materials provided with the distribution.
00013  * 3. Neither the name of the Institute nor the names of its contributors
00014  *    may be used to endorse or promote products derived from this software
00015  *    without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
00018  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00019  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
00020  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
00021  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00022  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
00023  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
00024  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
00025  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
00026  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
00027  * SUCH DAMAGE.
00028  *
00029  * $Id: ext-sensor.c,v 1.2 2010/08/25 19:34:42 nifi Exp $
00030  *
00031  * -----------------------------------------------------------------
00032  *
00033  * Author  : Adam Dunkels, Joakim Eriksson, Niclas Finne, Marcus Lundén,
00034  *           Jesper Karlsson
00035  * Created : 2005-11-01
00036  * Updated : $Date: 2010/08/25 19:34:42 $
00037  *           $Revision: 1.2 $
00038  */
00039 
00040 
00041 #include "contiki.h"
00042 #include "dev/ext-sensor.h"
00043 #include "dev/sky-sensors.h"
00044 
00045 /* SREF_0 is AVCC */
00046 /* SREF_1 is Vref+ */
00047 /* ADC0 == P6.0/A0 == port "under" logo */
00048 /* ADC1 == P6.1/A1 == port "over" logo */
00049 /* ADC2 == P6.2/A2, bottom expansion port */
00050 /* ADC3 == P6.1/A3, bottom expansion port, End Of (ADC-)Sequence */
00051 
00052 #define INPUT_CHANNEL      ((1 << INCH_0) | (1 << INCH_1) | \
00053                             (1 << INCH_2) | (1 << INCH_3))
00054 #define INPUT_REFERENCE     SREF_0
00055 #define EXT_MEM0            ADC12MEM0
00056 #define EXT_MEM1            ADC12MEM1
00057 #define EXT_MEM2            ADC12MEM2
00058 #define EXT_MEM3            ADC12MEM3
00059 
00060 const struct sensors_sensor ext_sensor;
00061 /*---------------------------------------------------------------------------*/
00062 static int
00063 value(int type)
00064 {
00065   /* ADC0 corresponds to the port under the logo, ADC1 to the port
00066      over the logo, ADC2 and ADC3 corresponds to port on the JCreate
00067      bottom expansion port) */
00068   switch(type) {
00069   case ADC0:
00070     return EXT_MEM0;
00071   case ADC1:
00072     return EXT_MEM1;
00073   case ADC2:
00074     return EXT_MEM2;
00075   case ADC3:
00076     return EXT_MEM3;
00077   }
00078   return 0;
00079 }
00080 /*---------------------------------------------------------------------------*/
00081 static int
00082 status(int type)
00083 {
00084   return sky_sensors_status(INPUT_CHANNEL, type);
00085 }
00086 /*---------------------------------------------------------------------------*/
00087 static int
00088 configure(int type, int c)
00089 {
00090   return sky_sensors_configure(INPUT_CHANNEL, INPUT_REFERENCE, type, c);
00091 }
00092 /*---------------------------------------------------------------------------*/
00093 SENSORS_SENSOR(ext_sensor, "Ext", value, configure, status);